<!--
 * @Description: 布局应用
 * @Author: zzj
 * @Date: 2021-08-18 15:06:42
 * @LastEditors: zzj
 * @LastEditTime: 2021-08-18 15:23:05
-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>布局应用</title>
    <style>
        body{
            margin: 0;
        }
        .content{
            min-height: 5000px;
        }
        .tankuang{
            position: fixed;
            width: 100%;
            top:0;
            bottom: 0;
            background-color: rgb(0, 0, 0 ,.5);
        }
        .tankuang .dialog{
            position: absolute;
            background-color: #fff;
            width: 400px;
            margin: 0 auto;
            text-align: center;
            top:100px;
            left: 50%;
            margin-left: -200px;
            min-height: 300px;
            border-radius: 5px;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="header">
            <h2>网易严选</h2>
        </div>
        <div class="content"></div>
        <div class="footer">
            版全信息
        </div>
        <div class="tankuang">
            <div class="dialog">
                <div class="guanbi">关闭</div>
                <div class="erweima">二维码</div>
                <div class="wenti">遇到问题？</div>
            </div>
        </div>
    </div>
</body>
</html>